Luchi del Mar might be a person known within a specific community or among her followers on Instagram. The fact that she's in a black dress on her IG story could be part of her personal style update, perhaps for an event she attended or just to show off a new look. However, without further information, it's just speculation.
Maybe the black dress she's wearing is a designer piece, which makes it special. Or perhaps the way she posed in the IG story while wearing it is unique.
I'm sorry, I'm not familiar with the specific 'la mujer del vendaval full story'. Maybe you can provide more context or look for it in relevant literature or online resources.